3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
9 //_________________________________________________________________________
10 // Implementation version v1 of the PHOS particle identifier
11 // Identification is based on information from CPV and EMC
13 //*-- Author: Yves Schutz (SUBATECH), Gustavo Conesa.
15 // --- ROOT system ---
20 // --- Standard library ---
22 // --- AliRoot header files ---
23 class AliPHOSEmcRecPoint ;
24 class AliPHOSCpvRecPoint ;
26 #include "AliPHOSPID.h"
27 #include "AliESDtrack.h"
28 class AliPHOSPIDv1 : public AliPHOSPID {
32 AliPHOSPIDv1() ; // ctor
33 AliPHOSPIDv1(const TString alirunFileNameFile, const TString eventFolderName = AliConfig::GetDefaultEventFolderName()) ;
34 AliPHOSPIDv1(const AliPHOSPIDv1 & pid) ; // cpy ctor
36 virtual ~AliPHOSPIDv1() ; // dtor
38 virtual void Exec(Option_t *option); // Does the job
40 //Get file name that contain the PCA
41 const TString GetFileNamePrincipal(TString particle) const;
43 //Get file name that contain PID parameters
44 const TString GetFileNameParameters() const {return fFileNameParameters ;}
46 // Get number of rec.particles in this run
47 virtual Int_t GetRecParticlesInRun() const {return fRecParticlesInRun ;}
50 // Get PID parameters as they are defined in fParameters
51 Float_t GetParameterCalibration (Int_t i) const;
52 Float_t GetParameterCpv2Emc (Int_t i, TString axis) const;
53 Float_t GetParameterTimeGate (Int_t i) const;
54 Float_t GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const ;
55 Float_t GetParameterPhotonBoundary (Int_t i) const;
56 Float_t GetParameterPi0Boundary (Int_t i) const;
58 // Get energy-dependent PID parameters
59 Float_t GetCalibratedEnergy (Float_t e) const;
60 Float_t GetCpv2EmcDistanceCut (TString axis, Float_t e) const ;
61 Float_t GetEllipseParameter (TString particle, TString param, Float_t e) const;
63 // Set PID parameters to change appropriate element of fParameters
64 void SetParameterCalibration (Int_t i, Float_t param);
65 void SetParameterCpv2Emc (Int_t i, TString axis, Float_t cut) ;
66 void SetParameterTimeGate (Int_t i, Float_t gate) ;
67 void SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t value) ;
68 void SetParameterPhotonBoundary(Int_t i, Float_t param);
69 void SetParameterPi0Boundary (Int_t i, Float_t param);
71 //Switch to "on flyght" mode, without writing to TreeR and file
72 void SetWriting(const Bool_t toWrite = kFALSE){fWrite = toWrite;}
75 virtual const char * Version() const { return "pid-v1" ; }
77 AliPHOSPIDv1 & operator = (const AliPHOSPIDv1 & /*pid*/) { return *this ;}
81 const TString BranchName() const ;
83 virtual void InitParameters() ;
84 void MakeRecParticles(void ) ;
87 //Functions to calculate the PID probability
88 // Double_t ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl) ;
89 Double_t GausF (Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
90 Double_t GausPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
91 Double_t LandauF(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b/(x*x)+c/x
92 Double_t LandauPol2(Double_t x, Double_t y, Double_t *par) ; //gaussian probability, parameter dependence a+b*x+c*x*x
93 // Relative Distance CPV-EMC
94 Float_t GetDistance (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Option_t * axis)const ;
95 Int_t GetCPVBit (AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv, Int_t EffPur, Float_t e) const;
96 Int_t GetPrincipalBit (TString particle, const Double_t* P, Int_t EffPur, Float_t e)const ; //Principal cut
97 Int_t GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const;
98 Int_t GetHardPi0Bit (AliPHOSEmcRecPoint * emc) const;
99 TVector3 GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * cpv)const ;
100 void PrintRecParticles(Option_t * option) ;
101 virtual void WriteRecParticles() ;
102 void SetParameters() ; //Fills the matrix of parameters
106 void SetBayesianPID(Bool_t set){ fBayesian = set ;}
108 void SetInitPID(const Double_t * pid) ;
109 void GetInitPID(Double_t * pid) const ;
112 Bool_t fBayesian ; // Do PID bayesian
113 Bool_t fDefaultInit; //! kTRUE if the task was created by defaut ctor (only parameters are initialized)
114 Bool_t fWrite ; //! To write result to file
115 Int_t fNEvent ; //! current event number
116 TString fFileNamePrincipalPhoton ; // File name of the photon principals
117 TString fFileNamePrincipalPi0 ; // File name of the pi0 principals
118 TString fFileNameParameters ; // File name with PID parameters
119 TPrincipal *fPrincipalPhoton ; //! TPrincipal from photon pca file
120 TPrincipal *fPrincipalPi0 ; //! TPrincipal from pi0 pca file
121 Double_t *fX ; //! Shower shape for the principal data
122 Double_t *fPPhoton ; //! Principal photon eigenvalues
123 Double_t *fPPi0 ; //! Principal pi0 eigenvalues
124 Int_t fRecParticlesInRun ; //! Total number of recparticles in one run
125 TMatrix *fParameters; //! Matrix of identification Parameters
127 //Initial pid population
128 Double_t fInitPID[AliESDtrack::kSPECIESN] ;
129 // pid probability function parameters
131 Double_t fTphoton[3] ; // gaussian tof response for photon
132 TFormula * fTFphoton ; // the formula
133 /* Double_t fTelectron[3] ; // gaussian tof response for electrons */
134 /* TFormula * fTFelectron ; // the formula */
135 /* Double_t fTmuon[3] ; // gaussian tof response for muon */
136 /* TFormula * fTFmuon ; // the formula */
137 Double_t fTpiong[3] ; // gaussian tof response for pions
138 TFormula * fTFpiong ; // the formula
139 /* Double_t fTpionl[3] ; // gaussian tof response for pions */
140 /* TFormula * fTFpionl ; // the formula */
141 Double_t fTkaong[3] ; // landau tof response for kaons
142 TFormula * fTFkaong ; // the formula
143 Double_t fTkaonl[3] ; // landau tof response for kaons
144 TFormula * fTFkaonl ; // the formula
145 Double_t fThhadrong[3] ; // gaus tof response for heavy hadrons
146 TFormula * fTFhhadrong ; // the formula
147 Double_t fThhadronl[3] ; // landau tof response for heavy hadrons
148 TFormula * fTFhhadronl ; // the formula
149 /* Double_t fTpion[9] ; // gaussian tof response for pions */
150 /* Double_t fTkaon[9] ; // landau tof response for kaons */
151 /* Double_t fThhadron[9] ; // landau tof response for nucleons */
154 Double_t fDmuon[3] ; // gaussian ss response for muon
155 TFormula * fDFmuon ; // the formula
156 Double_t fDphoton[9] ; // gaussian ss response for EM
157 Double_t fDpi0[9] ; // gaussian ss response for pi0
158 Double_t fDhadron[9] ; // gaussian ss response for hadrons
160 // gaussian ss response for muons
162 Double_t fCPVelectron[9] ; // gaussian emc-cpv distance response for electron
163 Double_t fCPVcharged[9] ; // landau emc-cpv distance response for charged part (no elect) */
164 /* Double_t fCPVchargedg[9] ; // gaussian emc-cpv distance response for charged part (no elect) */
165 /* Double_t fCPVchargedl[9] ; // landau emc-cpv distance response for charged part (no elect) */
167 ClassDef( AliPHOSPIDv1,10) // Particle identifier implementation version 1
171 #endif // AliPHOSPIDV1_H